Home / 688,290.36-1,032,435.54-215,013.03

Finding the Fourth Proportional to 688,290.36, 1,032,435.54 and 215,013.03

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Solution

The fourth proportional to 688,290.36, 1,032,435.54 and 215,013.03 is: 322,519.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,290.36 : 1,032,435.54 = 215,013.03 : x
  2. Step 2: Convert to fraction form
    688,290.36/1,032,435.54 = 215,013.03/x
  3. Step 3: Cross multiply
    688,290.36x = 1,032,435.54 × 215,013.03
  4. Step 4: Simplify right side
    688,290.36x = 221,987,093,735.09
  5. Step 5: Solve for x
    x = 221,987,093,735.09/688,290.36
  6. Step 6: Final answer
    x = 322,519.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.